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18F-FDG PET/CT as a semiquantitative imaging marker in HPV-p16-positive oropharyngeal squamous cell cancers.

Abstract：

PURPOSE:There is evidence that the status of human papilloma virus subtype 16 (HPV-p16) alters the prognosis of patients with oropharyngeal squamous cell cancer (OSCC). We sought to establish whether there is a relationship between HPV-p16 status and 18F-FDG uptake in the prognosis of OSCC. MATERIALS AND METHODS:Patients with newly diagnosed OSCC at our institution between June 2011 and June 2012 were retrospectively evaluated. All patients underwent a baseline 18F-FDG PET/computed tomographic scan and HPV-p16 testing. Tumour maximum standardized uptake value (SUVmax), mean standardized uptake value (SUVmean) and total glycolytic activity (TGA) [defined as metabolic tumour volume (MTV) multiplied by SUVmean] were measured. All PET/computed tomographic scans were reviewed on a Siemens Syngo.via (version VA11B_HF03) workstation. A designated operator defined the region of the primary tumour with the MTV segmented by 40% of the SUVmax fixed threshold method. RESULTS:Seventy-nine patients aged 27-84 years met the criteria for inclusion in the study. The types of primary tumour were tonsillar squamous cell carcinoma in 48% and base of tongue squamous cell carcinoma in 29%. The mean SUVmax was 17.5 and 17.7 in HPV-p16-positive and HPV-p16-negative groups, respectively (P=0.90). The mean MTV was 8.36 and 7.07 ml in HPV-p16-positive and HPV-p16-negative patients, respectively (P=0.42). The mean TGA values were 96.3 and 82.5 g among the HPV-p16-positive and HPV-p16-negative patients (P=0.54). There was no significant difference between HPV-p16 status and tumour grading for any of the imaging markers. CONCLUSION:There were no statistically significant differences between HPV-p16-positive and HPV-p16-negative OSCC for any of the metabolic imaging markers (SUVmax, SUVmean, MTV and TGA) measured in this study.

journal_name

Nucl Med Commun

journal_title

Nuclear medicine communications

authors

Huang YT,Ravi Kumar AS,Bhuta S

doi

10.1097/MNM.0000000000000208

subject

Has Abstract

pub_date

2015-01-01 00:00:00

pages

16-20

issue

eissn

0143-3636

issn

1473-5628

journal_volume

pub_type

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18F-FDG PET/CT as a semiquantitative imaging marker in HPV-p16-positive oropharyngeal squamous cell cancers.